<script lang="ts" setup name="HomeCategory">
import { computed, ref } from 'vue';

// import XtxSkeleton from '@/components/skeleton/index.vue'
import useStore from '@/store/index'

const { category } = useStore()
const categoryId = ref('')

// 鼠标移除获取到id
const handleMouseenter = (id: string) => {
  if (!id) return
  categoryId.value = id
}

// 通过计算属性控制 过滤出 hover的下面的goods
const goodsItem = computed(() => {
  return category.list.find(item => item.id === categoryId.value)?.goods
})
</script>

<template>
  <div class="home-category" @mouseleave="categoryId = ''">
    <ul class="menu">
      <li :class="{ active: categoryId === item.id }" v-for="item, index in  category.list" :key="index"
        @mouseenter="handleMouseenter(item.id)">
        <RouterLink :to="`/category/${item.id}`">
          {{ item.name }}
        </RouterLink>

        <template v-if="item.children">
          <!-- <template v-if="false"> -->
          <RouterLink :to="`/category/sub/${val.id}`" v-for="val in item.children?.slice(0, 2)">
            {{ val.name }}
          </RouterLink>
        </template>

        <template v-else>
          <XtxSkeleton :width="60" :height="20" style="margin-left: 5px" bg="rgba(255,255,255,0.2)" animated fade />
          <XtxSkeleton :width="50" :height="20" style="margin-left: 10px" bg="rgba(255,255,255,0.2)" animated fade />
        </template>
      </li>
    </ul>

    <!-- 弹层 -->
    <div class="layer" v-if="goodsItem?.length">
      <h4>分类推荐 <small>根据您的购买或浏览记录推荐</small></h4>
      <ul>
        <li v-for="item in goodsItem" :key="item.id">
          <RouterLink to="/">
            <img :src="item.picture" alt="">
            <div class="info">
              <p class="name ellipsis-2"> {{ item.name }} </p>
              <p class="desc ellipsis"> {{ item.desc }} </p>
              <p class="price"><i>¥</i> {{ item.price }} </p>
            </div>
          </RouterLink>
        </li>
      </ul>
    </div>

  </div>
</template>

<style scoped lang="less">
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 99;

  .menu {
    li {
      padding-left: 40px;
      height: 55px;
      line-height: 55px;
      // &:hover {
      //   background: @xtxColor;
      // }

      // &:hover 鼠标悬停在里上时，对应的li正常高亮 （辅助）
      // &:active 鼠标悬停到对应的盒子，根据id也要让对应的 li 高亮
      &:hover,
      &.active {
        background: @xtxColor;
      }

      a {
        margin-right: 4px;
        color: #fff;

        &:first-child {
          font-size: 16px;
        }
      }
    }
  }

  // 弹层样式 
  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255, 255, 255, 0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;

    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;

      small {
        font-size: 16px;
        color: #666;
      }
    }

    ul {
      display: flex;
      flex-wrap: wrap;

      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;

        &:nth-child(3n) {
          margin-right: 0;
        }

        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;

          &:hover {
            background: #e3f9f4;
          }

          img {
            width: 95px;
            height: 95px;
          }

          .info {
            padding-left: 10px;
            line-height: 24px;
            width: 190px;

            .name {
              font-size: 16px;
              color: #666;
            }

            .desc {
              color: #999;
            }

            .price {
              font-size: 22px;
              color: @priceColor;

              i {
                font-size: 16px;
              }
            }
          }
        }
      }
    }
  }

  &:hover {
    .layer {
      display: block;
    }
  }

}
</style>
